CN112758163B

CN112758163B - Expandable child carrier

Info

Publication number: CN112758163B
Application number: CN202110168283.0A
Authority: CN
Inventors: 安德鲁J·泰勒; 柯提斯M·哈庭斯汀; 罗伯特E·浩特
Original assignee: Wonderland Switzerland AG
Current assignee: Wonderland Switzerland AG
Priority date: 2016-12-13
Filing date: 2017-12-11
Publication date: 2023-07-07
Anticipated expiration: 2037-12-11
Also published as: US10207731B2; CN112758163A; US20180162436A1; EP3335963B1; CN108215951A; CN112758164A; CA2986634A1; CN108215951B; EP3335963A1; CN112758164B

Abstract

An expandable child carrier includes a base frame, a pivot frame, at least a first wheel unit, and at least a second wheel unit. The pivoting frame is pivoted to the base frame. The first wheel unit is mounted to the base frame. The second wheel unit is mounted to the pivot frame. A distance between the second wheel unit and the first wheel unit will be adjusted as the pivot frame pivots relative to the base frame.

Description

Expandable child carrier

The application is a divisional application of the invention patent application with the application number 201711309972.9 and the name of an expandable child carrier, wherein the application date is 2017, 12, 11.

Technical Field

The present invention relates to child carriers, and more particularly to an expandable child carrier.

Background

Existing small multi-position strollers include two infant seats disposed in a fore-aft direction. In view of the sophistication, existing carts have a small wheelbase (i.e., the distance between the axes of rotation of their front and rear wheels). However, in view of stability, the vertical projection of the center of gravity of each baby seat is preferably located within an area defined by the rotational axes of the front and rear wheels of the cart. As a result, the space between the two infant seats of the pushchair will become smaller. The existing carts described above will have a larger wheelbase after modification, so that the space between the two infant seats of the cart will become larger. However, its greater length (due to the greater wheelbase) is not required when only one infant seat is used.

Disclosure of Invention

It is therefore an object of the present invention to provide an expandable child carrier which overcomes at least one of the drawbacks of the prior art.

The invention provides an expandable child carrier, which comprises a base frame, a pivot frame, at least one first wheel unit, at least one second wheel unit and a handle. The pivot frame is provided with at least one pivot frame component pivoted with the base frame. The first wheel unit is mounted to the base frame. The second wheel unit is mounted to the pivot frame. The distance between the second wheel unit and the first wheel unit will be adjusted as the pivot frame pivots relative to the base frame. The handle is connected with the at least one pivoting frame component. Wherein the at least one pivoting frame member is pivotable relative to the base frame in a retracted position and an extended position when the handle is subjected to an external force in one of a clockwise or counterclockwise direction, the distance between the second wheel unit and the first wheel unit being smaller in the retracted position than in the extended position.

In the expandable child carrier of the present invention, the distance between the ground and the base frame when the pivot frame is in the retracted position is equivalent to the distance between the ground and the base frame when the pivot frame is in the extended position.

In the expandable child carrier of the present invention, the distance between the ground and the base frame when the pivot frame is in the retracted position is different from the distance between the ground and the base frame when the pivot frame is in the extended position.

The expandable child carrier of the present invention further comprises a latch and a positioning seat, wherein the positioning seat is fixedly mounted on the base frame and is provided with at least one positioning groove, and the latch is movably mounted on the handle and is detachably engaged with the positioning groove so as to position the pivoting frame relative to the base frame.

The expandable child carrier of the present invention has an L-shaped pivot frame member that is pivotable about opposite ends of the base frame rear portion.

The expandable child carrier of the present invention further comprises a mounting seat and a mounting seat stopper, wherein the mounting seat is fixedly mounted on the base frame for detachably mounting the seat, the mounting seat stopper is interlockingly mounted on the pivot frame, when the pivot frame is in the retracted position, the mounting seat stopper stops the mounting seat to prevent the seat from being mounted on the mounting seat, and when the pivot frame is in the expanded position, the mounting seat stopper releases the stop of the mounting seat to allow the seat to be mounted on the mounting seat.

The expandable child carrier of the present invention, the first wheel unit includes a first housing rotatably mounted to the base frame, and a first wheel rotatably mounted to the first housing.

The invention has the beneficial effects that: when the seat is not required, the seat may be removed from the mount and the pivot frame may be moved to a retracted position so that the expandable child carrier can be relatively compact. When the seat is needed, the pivot frame is moved to the extended position and the seat is mounted to the mount. Because the distance between the second wheel unit and the first wheel unit is relatively large when the pivot frame is in the extended position, a space between the base frame and the seat is relatively large.

Drawings

FIG. 1 is a side view illustrating a first embodiment of the expandable child carrier of the present invention;

FIG. 2 is a fragmentary perspective view illustrating a pivotal frame of the first embodiment in a retracted position;

FIG. 3 is a fragmentary perspective view illustrating the pivotal frame in an extended position;

FIG. 4 is a fragmentary side elevational view of the pivotal frame in the retracted position;

FIG. 5 is a fragmentary side elevational view of the pivotal frame in the extended position;

FIG. 6 is a fragmentary side elevational view illustrating a pivotal frame of a second embodiment of the expandable child carrier of the present invention in a retracted position; and

FIG. 7 is a fragmentary side view schematically illustrating the pivotal frame in an extended position.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples.

Referring to fig. 1 and 2, a first embodiment of the expandable child carrier of the present invention comprises a main frame unit 2, a pivoting frame unit 3, at least a first wheel unit 6 and two second wheel units 7. In one embodiment, the expandable child carrier may be a stroller.

The main frame unit 2 includes a base frame 21, a handle frame 22 connected to the front of the base frame 21 and extending upward and rearward, a first mount module 23 mounted to the handle frame 22, and a first seat 24 fixedly or detachably mounted to the first mount module 23.

The first wheel unit 6 is mounted to the front of the base frame 21. In one embodiment, the first wheel unit 6 may be a rotary wheel assembly and include a first housing 61 rotatably mounted to a front portion of the base frame 21, and a first wheel 62 rotatably mounted to the first housing 61.

The pivoting frame unit 3 includes a pivoting frame 31 pivotally connected to the rear portion of the base frame 21 and pivotable with respect to the base frame 21 about a pivot axis a (see fig. 2). In one embodiment, the pivoting frame 31 includes two L-shaped pivoting frame members 311 pivoted to opposite ends of the rear portion of the base frame 21 in the horizontal direction, and a shaft member 312 (see fig. 2) connecting the pivoting frame members 311. The configuration of the pivoting frame 31 is not limited thereto.

The second wheel unit 7 is mounted on a pivot frame 31. In one embodiment, each second wheel unit 7 includes a second wheel 71 rotatably mounted to a corresponding pivoting frame member 311. A distance between the rotational axis of the second wheel 71 of the second wheel unit 7 and the rotational axis of the first wheel 62 of the first wheel unit 6 will be adjusted as the pivot frame 31 pivots relative to the base frame 21.

The expandable child carrier may further comprise an operating unit 5 (see fig. 2) operable to pivot the pivot frame 31 relative to the base frame 21. The operating unit 5 includes a handle 51, an operating member 52, a latch 53 and a positioning seat 54.

The handle 51 is coupled to the pivot frame 31 and spaced apart from a pivot axis a of the pivot frame 31 with respect to the base frame 21.

The positioning seat 54 is fixedly mounted to the base frame 21, and is formed with two positioning grooves 541.

The latch 53 is movably mounted to the handle 51 and removably engages one of the positioning slots 541 to position the pivot frame 31 relative to the base frame 21 in a retracted position (see fig. 2 and 4) in which the distance between the respective axes of rotation of the first wheel 61 and the second wheel 71 is relatively small, or in an extended position (see fig. 3 and 5) in which the distance between the respective axes of rotation of the first wheel 61 and the second wheel 71 is relatively large.

The operating member 52 is movably mounted on the handle 51 and is associated with the latch member 53 by a transmission mechanism (not shown), such as a cam mechanism or a linkage mechanism. In one embodiment, the operating member 52 is in driving connection with the latch member 53, i.e., rotation of the operating member 52 relative to the handle 51 in a first actuation direction R1 (see fig. 2) will move the latch member 53 in a first movement direction D1 to disengage one of the positioning slots 541 to allow the pivot frame 31 to move between the retracted and extended positions relative to the base frame 21 via the driving mechanism. In a variation, the operating member 52 can be depressed relative to the handle 51 to drive displacement of the latch member 53 through the transmission mechanism.

Referring to fig. 4 and 5, the positioning groove 541 of the positioning seat 54 is preferably configured such that a distance between the ground (not shown) and the rear of the base frame 21 when the pivoting frame 31 is in the retracted position is the same as a distance between the ground and the rear of the base frame 21 when the pivoting frame 31 is in the extended position (see a triangle drawn with a broken line in fig. 4 and 5). Therefore, the main frame unit 2 maintains the same horizontal height when the pivoting frame 31 is in the retracted position and the extended position to maintain the same seat angle. Thereby, the first wheel is also held in the vertical direction of the center pin perpendicular to the ground, and the first wheel can be rotated accurately. It should be noted that, in a variation, the positions or the number of the positioning slots 541 of the positioning seat 54 may be modified so that the pivot frame 31 may be located at different positions with respect to the base frame 21, and the distance between the ground and the base frame 21 when the pivot frame 31 is in the retracted position is different from the distance between the ground and the base frame 21 when the pivot frame 31 is in the extended position.

In one embodiment, the handle 51 may be configured such that a user may push the handle 51 forward to move the pivoting frame 31 toward the extended position, and may pull the handle 51 rearward to move the pivoting frame 31 toward the retracted position.

Referring again to fig. 1 and 2, the expandable child carrier may further include a second mounting module 4 for removably mounting a second seat 8. In an embodiment, the second mounting module 4 includes two mounting seats 41 correspondingly and fixedly mounted at two opposite lateral ends of the rear portion of the base frame 21, and two mounting seat stoppers 42 correspondingly and cooperatively mounted on the pivot frame member 311 of the pivot frame 31. Preferably, when the pivoting frame 31 is in the retracted position, each of the mount stoppers 42 respectively corresponds to one of the two mounts 41 to prevent the second seat 8 from being mounted to the mount 41, and when the pivoting frame 31 is in the extended position, each of the mount stoppers 42 respectively corresponds to one of the two mounts 41 to be unblocked to allow the second seat 8 to be mounted to the mount 41. In one embodiment, the positioning seat 54 of the operation unit 5 is formed integrally with one of the mounting seats 41, and the handle 51 is interlockingly mounted to the mounting seat stopper 42. In a modification, the second mounting module 4 is mounted to the pivot frame 31 in a linkage manner, and the second seat 8 can be disposed only when the pivot frame 31 is in the extended position.

The advantages of the expandable child carrier of the present invention are as follows:

1. when the second seat 8 is not needed, the second seat 8 can be removed from the mounting seat 41 of the second mounting module 4 and the pivot frame 31 can be moved to the retracted position so that the expandable child carrier can be relatively small.

2. When both the first and second seats 24, 8 are required, the pivot frame 31 is moved to the extended position and the second seat 8 is mounted to the mount 41 of the second mounting module 4. Because the distance between the respective axes of rotation of the first wheel 61 and the second wheel 71 is relatively large when the pivot frame 31 is in the extended position, a space between the first seat 24 and the second seat 8 is relatively large.

Referring to fig. 6 and 7, a second embodiment of the expandable child carrier of the present invention is different from the first embodiment in the aspect of the operation unit 5. The operating unit 5 of the second embodiment includes a handle 51, an operating member 52, a latch 53, a positioning seat 54, and an auxiliary link 55.

The handle 51 is pivotally connected to the base frame 21 at a pivot point. In one embodiment, the handle 51 has a grip 511.

The latch 53 is movably mounted to the handle 51 and removably engages one of the detents 541 to position the pivot frame 31 relative to the base frame 21. In one embodiment, the latch 53 is movable in the direction of the handle 51.

The operating member 52 is movably mounted on the handle 51 and is associated with the latch 53. In an embodiment, the operating member 52 is coupled to the latch member 53 in a manner that the operating member 52 is coupled to the latch member 53 such that depression of the operating member 52 in a second direction of movement D2 (see fig. 6) relative to the handle 51 displaces the latch member 53 in the second direction of movement to disengage the latch member 53 from one of the positioning slots 541, thereby allowing the handle 51 to pivot relative to the base frame 21.

The auxiliary link 55 has opposite ends respectively pivoted to the pivot frame 31 and the handle 51, and cooperates with the pivot frame 31, the handle 51 and the base frame 21 to form a four-bar mechanism. Thus, the latch 53 removably engages one of the positioning slots 541 of the positioning seat 54 to position the pivot frame 31 in a retracted position (see fig. 6) or an extended position (see fig. 7) relative to the base frame 21. Preferably, the auxiliary link 55 cooperates with the pivot frame 31, the handle 51 and the base frame 21 to form a parallel four-bar mechanism.

In one embodiment, the grip portion 511 of the handle 51 is located at an end opposite to the pivot point of the auxiliary link 55, so that a user can push the grip portion 511 forward (i.e., rotate the handle 51 in a second actuation direction R2 (see fig. 6)) to move the pivoting frame 31 toward the expanded position, and pull the grip portion 511 backward to move the pivoting frame 31 toward the contracted position. In a variation, the gripping portion 511 may be located at the same end as the pivot point of the auxiliary link 55, so that the user may pull the gripping portion 511 backward (i.e., rotate the handle 51 in the second activating direction R2) to move the pivoting frame 31 toward the expanded position.

In the previous descriptions, for purposes of explanation, numerous specific details have been set forth in order to provide a thorough understanding of the embodiments. The fact that one or more embodiments may be practiced with some details will be apparent to those skilled in the art. It should be appreciated that reference to "an embodiment" in this application is an embodiment having sequential numbers indicating that a particular feature, structure, or characteristic is to be included in the practice of the invention. It should be appreciated that various features are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of the various inventive aspects.

However, the foregoing is merely illustrative of the present invention and is not intended to limit the scope of the invention, which is defined by the appended claims and their equivalents.

Claims

1. An expandable child carrier, the expandable child carrier comprising:

a base frame;

the pivot frame is provided with at least one pivot frame component pivoted to the base frame and a shaft piece connected with the pivot frame component;

at least one first wheel unit mounted to the base frame;

at least one second wheel unit mounted to the at least one pivot frame member, a distance between the second wheel unit and the first wheel unit to be adjusted as the pivot frame pivots relative to the base frame; and

A handle connected with the at least one pivoting frame component and interlockingly installed on the at least one pivoting frame component;

wherein in response to an application of an external force to the handle in one of a clockwise or counterclockwise direction, the at least one pivoting frame member is pivotable relative to the base frame between a retracted position and an extended position about a pivot axis different from the axle, the distance between the second wheel unit and the first wheel unit being smaller in the retracted position than in the extended position.

2. The expandable child carrier of claim 1, wherein the distance between the ground and the base frame when the pivot frame is in the collapsed position is equivalent to the distance between the ground and the base frame when the pivot frame is in the expanded position.

3. The expandable child carrier of claim 1, wherein a distance between the ground and the base frame when the pivot frame is in the collapsed position is different from a distance between the ground and the base frame when the pivot frame is in the expanded position.

4. The expandable child carrier according to claim 1, further comprising a latch fixedly mounted to the base frame and defining at least one detent, the latch being movably mounted to the handle and removably engaging the detent for positioning the pivot frame relative to the base frame.

5. The expandable child carrier according to claim 1, wherein the pivot frame members are L-shaped and are pivotable corresponding to horizontally opposed ends of the rear portion of the base frame.

6. The expandable child carrier of claim 1, further comprising a mount fixedly mounted to the base frame for removable mounting of a seat, and a mount stop interlockingly mounted to the pivot frame, the mount stop blocking the mount to prevent the seat from being mounted to the mount when the pivot frame is in the retracted position, the mount stop unblocking the mount to allow the seat to be mounted to the mount when the pivot frame is in the extended position.

7. The expandable child carrier of claim 1, wherein the first wheel unit comprises a first housing rotatably mounted to the base frame, and a first wheel rotatably mounted to the first housing.